Cultivator-gang equalizer



Feb. 27, 1923 0.1. HosoN. y

CULTIVATOR GANGYEQUALIZER.

FILED MAR. 2, 1921.

State of Texas, have invented a new Patented Z7, i923.

stares ver OSCAR T. HOBSON, OF TOLBERT,'TE}LAS.

To @YZ ywhom fit muy concer-n.'

Be it known that T, OSCAR T. HonsoN, a citizen ot the United States, residing at Tolbert, in the county ot VVilbarger and and useful Cultivator-Gang Equalizer, of which the following is a specification.

My invention relates to improvements in the control of cultivator gangs and is especially adapted for use on cultiva-tors of the pivot frame and the pivot axle classes.

The objects of my invention are, first, to cause the gangs to continually sit square with the row and thereby plow equal and parallel strips on both sides of the row; second, to make the gangs easier to guide; and third, to accomplish the two above named objects without hindering the adjustment of the spacing between gangs by means of the adjustable spread arch.

I accomplish these objects by the mechanism illustrated in the accompanying drawing in which,

Figure 1 is a perspective view ot part ot r a cultivator embodying the front arch, the

front part of the gangs, the spread arch, and the invention connected therewith.

Fig. 2 is a perspective view Jfrom the same angle showing the new parts disconnected 'from the old structure.

This invention applies to cultivators in which the gangs 1 1 (of which only the t'ront parts are shown) are fastened to the legs 2 2 of the liront arch by the couplings Sl 3 such that the gangs 1 1 may swing laterally about the pivots 4- 4t.

An operable connection between the two gangs is provided by the U-bolt clamps 5 5, the connecting rods 6 G', the crank arms 7 7, the shafts 8 8 which are journaled to the front arch by the hangers 9 9, and the crank-arms 10 10. Tlhe crank-arms 7, 7, 10, 10 are securely fastened to the shafts S 8 by set screws Crank-arms l0 10 have the effect of gear segments gearing the two shafts 8 8 together such that they will turn in opposite directions. The ball and the recess take the place of a number of teeth iu mesh whose angle of action is sufficient to take care ot any variation in the spacing ot the gangs. The nal form of the eyes 12 12 in the crank-arms 7 7 are made by a special reamer attached to a drill press, while the eyes of the connecting rods G 6 are forged in place thus forming close workable joints. TWhile this is the preferred Application filed March 2, 1921.

CULTVATOR-GANG EQALIZ'ER.

Serial No. 449,095.

'torni of construction double-hinge joints or ball and socket joints could be used equally well.

The mechanism pointed out as new is intended to replace any bracing which makes the gangs rigid each independently of the other because Such bracing hinders the adjustment in width of the spread arch 11.

It will be observed that when gang 1 swings about the pivot 1 the connecting rod 6 is actuated and thereby turns the crankarm 7 the shaft 8 the crank-arm 10 the crank-arm 10 arm 7 which actuates the connecting rod 6 thus causing the gang 1 to swing in opposite direction to that of gang 1. Then the two gangs are so connected that one cannot swing laterally without the other swinging also and when they swing laterally they must either swing toward` each. other or away from each other. Therefore the two gangs are necessarily rigid except when the spacing betwen them is being varied. The spacing is either varied or held constant at the will of the operator by means of the adjustable spread arch. 11, which enables the operator to make any variation while plowing.

In reference to the rigid gangs it is desired that they be rigid in regard to swinging laterally only. The double eye joints 12 12 allow sufficient {ieXib-ility for the gangs 1 1 to be raised or lowered by swinging vertically at the joints 13 13.

By making the gangs rigid with regard to swinging laterally they are made to yield bodily to the guiding effort imparted through the Yfront archy and. to continually sit square wi-th the row and plow equal and parallel strips on both sides of the row thereby contributing to an economical use of the draft power and the guiding eiiorts ot the operator.

These advantages are had in connection. with the advantages oi the adjustable spread arch which. is in easy reach of the operator and connects the gangs directly near the shares by means of which the most accurate variation of the spacing can be readily made thus insuring the proper amount of dirt being thrown to the row under all conditions of operation.

It will be observed that the spread arch cooperates with the new mechanism in making the gangs rigid and the new mechanism cooperates with the spread arch in providthe shaft 8 and the cranking for the variation of the spacing between the gangs.

Having thus described my invention what` shafts jo-urnaled. to the Ycultivator frame about vertically disposed axes, means for operatively collecting the lower ends of said shafts each to its corresponding gang, and means for operatively connecting the upper ends of said shafts together, substantially for the purpose described.

2. A cultivator provided with two gangs pivotedso as to swing laterally, two vvertically disposed shafts Journaled tothe cultivator frame7 crank arms and connecting rods y operatively connecting the lower ends of said shafts each to its corresponding gang, and meshing` crank arms fastened to the upper ends of said shafts.

In testimonyy that I claim the foregoing as my own, I have hereto affixed my signature in the presenceof witnesses.'V

OSCAR T. HOBSON.

Witnesses:

O. T. WARLIOK, LOUIS E..KEY, G. H. RICHIE. 

